The Maryland Department of Environment proposed new onsite regulations in April to require nitrogen removal technology on new systems on land that drains to the Chesapeake Bay, Atlantic coastal bays, or other impaired waters. The proposed regulations also set minimum operation and maintenance requirements for the life of the equipment. Companies that install or maintain the equipment must complete a state course and be certified by the manufacturer. Existing systems that fail could still be replaced with conventional systems under the proposal.
The state’s builders association says the required equipment is about double the cost of conventional systems. The Department of Environment estimates the cost of an advanced system to be around $13,500.
http://www.mde.state.md.us/programs/PressRoom/Pages/042712NRnewproposedBATreg.aspx
